I've never heard of the specific terms "Asperger" or "little professor" syndrome before.
But over the years, I've certainly known people who display the symptoms.
Usually harmless, but excessively focused obsession that's unproductive.
There was a good overview in a Newsweek (?) or Time cover on Autism this spring. Anyone reading this thread who is curious might want to seacrh those sites.
Autism is also interesting, as are brain injuries, because they give us a window on something that is very poorly understood, compared to other physiology: brain development and function.
d.o.l.
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